The phrase comes from Fist of the North Star, the 1980s manga and anime series known in Japanese as Hokuto no Ken, where martial artist Kenshiro tells defeated opponents they are already dead after striking their pressure points. Clips of the line spread widely as a meme in the 2010s, often paired with a bass boosted hit or a frozen reaction shot. Like the To be Continued arrow, it became shorthand in edits for a moment that has already ended badly.
Об этом звуке
Kenshiro saying omae wa mou shindeiru from Fist of the North Star, the iconic you are already dead line used for instant knockout memes and anime edits.
This is Kenshiro delivering his signature line omae wa mou shindeiru, meaning you are already dead, in a calm low voice before his opponent realises what has happened. The delivery is quiet and certain rather than shouted, which makes the moment funnier and more menacing at the same time. There is almost no build up, just the flat statement of fact, so the humour lands when it is placed right before a sudden defeat, fail or delayed reaction in a video.